2021233 has 4 divisors (see below), whose sum is σ = 2028708. Its totient is φ = 2013760.

The previous prime is 2021219. The next prime is 2021237. The reversal of 2021233 is 3321202.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3321202 = 2 ⋅1660601.

It can be written as a sum of positive squares in 2 ways, for example, as 659344 + 1361889 = 812^2 + 1167^2 .

It is a cyclic number.

It is not a de Polignac number, because 2021233 - 2⁹ = 2020721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2021237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3316 + ... + 3877.

It is an arithmetic number, because the mean of its divisors is an integer number (507177).

2^2021233 is an apocalyptic number.

It is an amenable number.

2021233 is a deficient number, since it is larger than the sum of its proper divisors (7475).

2021233 is an equidigital number, since it uses as much as digits as its factorization.

2021233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7474.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 2021233 is about 1421.7007420692. The cubic root of 2021233 is about 126.4364014491.

Adding to 2021233 its reverse (3321202), we get a palindrome (5342435).

The spelling of 2021233 in words is "two million, twenty-one thousand, two hundred thirty-three".